Title :
TE-to-TM mode conversion in GaAs/AlGaAs superlattice waveguide
Author :
Wolf, Tilman ; Shieh, C.-L. ; Engelmann, R. ; Alavi, K. ; Mantz, J.
Author_Institution :
Siemens Corp. Res. Inc., Princeton, NJ, USA
Abstract :
Intrinsic phase matching between a TE and a TM mode is obtained in a GaAs/AlGaAs superlattice waveguide, fabricated by Zn diffusion induced disordering, as a result of the birefringent waveguiding properties of the superlattice in combination with a proper choice of the waveguide geometry. As a consequence, up to 90% polarisation conversion is demonstrated without the application of phase matching techniques.
Keywords :
III-V semiconductors; aluminium compounds; birefringence; gallium arsenide; light polarisation; optical modulation; optical waveguides; semiconductor superlattices; AlGaAs:Zn-AlGaAs-GaAs; III-V semiconductors; TE-to-TM mode conversion; TE/TM mode conversion; Zn diffusion induced disordering; birefringent waveguiding properties; intrinsic phase matching; polarisation conversion; superlattice waveguide; waveguide geometry;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890819
